Browser Playground

The Shifty playground runs the full inference and validation pipeline entirely in your browser via WebAssembly — no server, no installation, no round-trips. Your data stays on your device.

Paste Turtle directly into the editor, upload a file, or load the built-in sample to try it out immediately.

Open Playground ↗

What the playground supports

Validate — paste or upload a shapes graph and a data graph, then click Validate. Results are grouped by severity (violation / warning / info) with expandable detail rows showing the focus node, failing property path, and offending value.

Infer — run SHACL-AF sh:rule entries to a fixed point. The inferred triples are shown as a count and can be downloaded as a Turtle file containing the original graph plus all derived triples.

Options — the Advanced options panel exposes:

  • Run inference — apply sh:rule entries before validating (on by default)

  • Graph mode — data, union, or union-all (controls which triples are visible to path traversal)

  • Minimum severity — filter which severity levels cause non-conformance

  • Sort results — deterministic ordering by severity, focus node, and constraint

File cache — uploaded files are stored in your browser’s IndexedDB so you can switch between them without re-uploading. The file cache manager is accessible via the Files button in the toolbar.

Building the playground locally

The playground requires the compiled WebAssembly module. After cloning:

# Requires wasm-pack (https://rustwasm.github.io/wasm-pack/)
./crates/shifty-wasm/build.sh

# Serve the example:
python3 -m http.server -d crates/shifty-wasm
# Open http://localhost:8000/example/

See crates/shifty-wasm/README.md for the full JS API and embedding details.